WILL MARK BRAINLIEST PLEASE HELP URGENT ITS A TEST PLEASE IM FAILING

2. Andrew has these marks: English 82%, French 75%, Art 78%, Science 80%
a) What mark will Andrew need in math if he wants his mean mark in these 5 subjects to be
each percent? Show your work. (3 marks)
D) 80%
ii) 81%
iii) 82%
b) Is it possible for Andrew to get a mean mark of 84% or higher? Justify your answer.